70502313 has 8 divisors (see below), whose sum is σ = 107432128. Its totient is φ = 40287024.

The previous prime is 70502297. The next prime is 70502347. The reversal of 70502313 is 31320507.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70502313 - 2⁴ = 70502297 is a prime.

It is a super-2 number, since 2×70502313² = 9941152276699938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 3357253 = 70502313 / (7 + 0 + 5 + 0 + 2 + 3 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70502313.

It is not an unprimeable number, because it can be changed into a prime (70502513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678606 + ... + 1678647.

It is an arithmetic number, because the mean of its divisors is an integer number (13429016).

Almost surely, 2^70502313 is an apocalyptic number.

It is an amenable number.

70502313 is a deficient number, since it is larger than the sum of its proper divisors (36929815).

70502313 is a wasteful number, since it uses less digits than its factorization.

70502313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357263.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 70502313 is about 8396.5655478892. The cubic root of 70502313 is about 413.1119790474. Note that the first 3 decimals are identical.

The spelling of 70502313 in words is "seventy million, five hundred two thousand, three hundred thirteen".